Adjustable batter board



FIG. 1 is a perspective view of an adjustable batter board showing my new design;

FIG. 2 is an enlarged side elevational view thereof;

FIG. 3 is a left side elevational view of FIG. 2;

FIG. 4 is a top plan view of FIG. 2;

FIG. 5 is a bottom plan view of FIG. 2. 

The ornamental design for an adjustable batter board, as shown and described. 